A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
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Viktor Szakats a1baacc670
schannel: check schannel_sha256sum() success, and more
Also:
- support 4GiB+ SHA-256 digest inputs.
- check `CryptGetHashParam()` output size.
- avoid overwriting existing digest when new digest calculation fails.
- avoid adding digest hash element on failure.

Closes #21739
2026-05-27 16:57:38 +02:00
.circleci
.github tidy-up: miscellaneous 2026-05-27 16:53:57 +02:00
CMake cmake: opt in MSVC_VERSION 1951 to picky warnings 2026-05-21 15:16:21 +02:00
docs INSTALL-CMAKE.md: document H2O config variable 2026-05-27 16:53:57 +02:00
include tidy-up: miscellaneous 2026-05-27 16:53:57 +02:00
lib schannel: check schannel_sha256sum() success, and more 2026-05-27 16:57:38 +02:00
LICENSES spacecheck: check long lines and repeat spaces, fix fallouts 2026-03-25 11:02:08 +01:00
m4 tidy-up: miscellaneous 2026-05-20 00:50:43 +02:00
projects tidy-up: miscellaneous 2026-05-27 16:53:57 +02:00
scripts checksrc: detect curlx_safefree() opportunities 2026-05-21 11:07:34 +02:00
src tidy-up: miscellaneous 2026-05-27 16:53:57 +02:00
tests tidy-up: miscellaneous 2026-05-27 16:53:57 +02:00
.clang-tidy.yml clang-tidy: enable more checks, fix fallouts 2026-04-14 02:20:16 +02:00
.dir-locals.el
.editorconfig
.git-blame-ignore-revs
.gitattributes buildconf: remove 2026-04-04 11:35:24 +02:00
.gitignore
.mailmap mailmap: cmeister2@gmail is primary for Max Dymond 2026-05-24 12:02:26 +02:00
acinclude.m4 build: omit zlib pkg-config reference for Android 2026-05-17 13:27:06 +02:00
appveyor.sh appveyor: bump to OpenSSL 3.6 2026-04-22 09:29:05 +02:00
appveyor.yml CI: set DO_NOT_TRACK=1 2026-04-23 11:22:35 +02:00
CHANGES.md CHANGES: fix typo in filename 2026-01-01 12:20:10 +01:00
CMakeLists.txt HTTP/3: add proxy CONNECT and MASQUE CONNECT-UDP support (ngtcp2 QUIC) 2026-05-27 08:49:53 +02:00
configure.ac tidy-up: miscellaneous 2026-05-27 16:53:57 +02:00
COPYING COPYING: bump copyright year range to 1996 - 2026 2026-01-08 23:19:44 +01:00
curl-config.in autotools: tidy-up if expressions 2025-12-10 22:29:19 +01:00
Dockerfile Dockerfile: fix typo in variable name 2026-05-20 13:01:56 +02:00
GIT-INFO.md
libcurl.pc.in
Makefile.am
README
README.md
RELEASE-NOTES tidy-up: miscellaneous 2026-05-27 16:53:57 +02:00
renovate.json renovate: use standard bump formula for OpenSSL 2026-04-15 10:17:33 +02:00
REUSE.toml
SECURITY.md

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curl is a command-line tool for transferring data from or to a server using URLs. It supports these protocols: DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS.

Learn how to use curl by reading the man page or everything curl.

Find out how to install curl by reading the INSTALL document.

libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl man page to learn how.

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